Definition of ex post facto in English:

ex post facto

Line breaks: ex post facto
Pronunciation: /ˌɛks pəʊst ˈfaktəʊ
 
/

adjective & adverb

  • With retrospective action or force: [as adjective]: ex post facto laws

Origin

erroneous division of Latin ex postfacto 'in the light of subsequent events'.

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